diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/net/wan/c101.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/net/wan/c101.c | 454 |
1 files changed, 0 insertions, 454 deletions
diff --git a/ANDROID_3.4.5/drivers/net/wan/c101.c b/ANDROID_3.4.5/drivers/net/wan/c101.c deleted file mode 100644 index 09a50751..00000000 --- a/ANDROID_3.4.5/drivers/net/wan/c101.c +++ /dev/null @@ -1,454 +0,0 @@ -/* - * Moxa C101 synchronous serial card driver for Linux - * - * Copyright (C) 2000-2003 Krzysztof Halasa <khc@pm.waw.pl> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License - * as published by the Free Software Foundation. - * - * For information see <http://www.kernel.org/pub/linux/utils/net/hdlc/> - * - * Sources of information: - * Hitachi HD64570 SCA User's Manual - * Moxa C101 User's Manual - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/capability.h> -#include <linux/slab.h> -#include <linux/types.h> -#include <linux/string.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/moduleparam.h> -#include <linux/netdevice.h> -#include <linux/hdlc.h> -#include <linux/delay.h> -#include <asm/io.h> - -#include "hd64570.h" - - -static const char* version = "Moxa C101 driver version: 1.15"; -static const char* devname = "C101"; - -#undef DEBUG_PKT -#define DEBUG_RINGS - -#define C101_PAGE 0x1D00 -#define C101_DTR 0x1E00 -#define C101_SCA 0x1F00 -#define C101_WINDOW_SIZE 0x2000 -#define C101_MAPPED_RAM_SIZE 0x4000 - -#define RAM_SIZE (256 * 1024) -#define TX_RING_BUFFERS 10 -#define RX_RING_BUFFERS ((RAM_SIZE - C101_WINDOW_SIZE) / \ - (sizeof(pkt_desc) + HDLC_MAX_MRU) - TX_RING_BUFFERS) - -#define CLOCK_BASE 9830400 /* 9.8304 MHz */ -#define PAGE0_ALWAYS_MAPPED - -static char *hw; /* pointer to hw=xxx command line string */ - - -typedef struct card_s { - struct net_device *dev; - spinlock_t lock; /* TX lock */ - u8 __iomem *win0base; /* ISA window base address */ - u32 phy_winbase; /* ISA physical base address */ - sync_serial_settings settings; - int rxpart; /* partial frame received, next frame invalid*/ - unsigned short encoding; - unsigned short parity; - u16 rx_ring_buffers; /* number of buffers in a ring */ - u16 tx_ring_buffers; - u16 buff_offset; /* offset of first buffer of first channel */ - u16 rxin; /* rx ring buffer 'in' pointer */ - u16 txin; /* tx ring buffer 'in' and 'last' pointers */ - u16 txlast; - u8 rxs, txs, tmc; /* SCA registers */ - u8 irq; /* IRQ (3-15) */ - u8 page; - - struct card_s *next_card; -}card_t; - -typedef card_t port_t; - -static card_t *first_card; -static card_t **new_card = &first_card; - - -#define sca_in(reg, card) readb((card)->win0base + C101_SCA + (reg)) -#define sca_out(value, reg, card) writeb(value, (card)->win0base + C101_SCA + (reg)) -#define sca_inw(reg, card) readw((card)->win0base + C101_SCA + (reg)) - -/* EDA address register must be set in EDAL, EDAH order - 8 bit ISA bus */ -#define sca_outw(value, reg, card) do { \ - writeb(value & 0xFF, (card)->win0base + C101_SCA + (reg)); \ - writeb((value >> 8 ) & 0xFF, (card)->win0base + C101_SCA + (reg + 1));\ -} while(0) - -#define port_to_card(port) (port) -#define log_node(port) (0) -#define phy_node(port) (0) -#define winsize(card) (C101_WINDOW_SIZE) -#define win0base(card) ((card)->win0base) -#define winbase(card) ((card)->win0base + 0x2000) -#define get_port(card, port) (card) -static void sca_msci_intr(port_t *port); - - -static inline u8 sca_get_page(card_t *card) -{ - return card->page; -} - -static inline void openwin(card_t *card, u8 page) -{ - card->page = page; - writeb(page, card->win0base + C101_PAGE); -} - - -#include "hd64570.c" - - -static inline void set_carrier(port_t *port) -{ - if (!(sca_in(MSCI1_OFFSET + ST3, port) & ST3_DCD)) - netif_carrier_on(port_to_dev(port)); - else - netif_carrier_off(port_to_dev(port)); -} - - -static void sca_msci_intr(port_t *port) -{ - u8 stat = sca_in(MSCI0_OFFSET + ST1, port); /* read MSCI ST1 status */ - - /* Reset MSCI TX underrun and CDCD (ignored) status bit */ - sca_out(stat & (ST1_UDRN | ST1_CDCD), MSCI0_OFFSET + ST1, port); - - if (stat & ST1_UDRN) { - /* TX Underrun error detected */ - port_to_dev(port)->stats.tx_errors++; - port_to_dev(port)->stats.tx_fifo_errors++; - } - - stat = sca_in(MSCI1_OFFSET + ST1, port); /* read MSCI1 ST1 status */ - /* Reset MSCI CDCD status bit - uses ch#2 DCD input */ - sca_out(stat & ST1_CDCD, MSCI1_OFFSET + ST1, port); - - if (stat & ST1_CDCD) - set_carrier(port); -} - - -static void c101_set_iface(port_t *port) -{ - u8 rxs = port->rxs & CLK_BRG_MASK; - u8 txs = port->txs & CLK_BRG_MASK; - - switch(port->settings.clock_type) { - case CLOCK_INT: - rxs |= CLK_BRG_RX; /* TX clock */ - txs |= CLK_RXCLK_TX; /* BRG output */ - break; - - case CLOCK_TXINT: - rxs |= CLK_LINE_RX; /* RXC input */ - txs |= CLK_BRG_TX; /* BRG output */ - break; - - case CLOCK_TXFROMRX: - rxs |= CLK_LINE_RX; /* RXC input */ - txs |= CLK_RXCLK_TX; /* RX clock */ - break; - - default: /* EXTernal clock */ - rxs |= CLK_LINE_RX; /* RXC input */ - txs |= CLK_LINE_TX; /* TXC input */ - } - - port->rxs = rxs; - port->txs = txs; - sca_out(rxs, MSCI1_OFFSET + RXS, port); - sca_out(txs, MSCI1_OFFSET + TXS, port); - sca_set_port(port); -} - - -static int c101_open(struct net_device *dev) -{ - port_t *port = dev_to_port(dev); - int result; - - result = hdlc_open(dev); - if (result) - return result; - - writeb(1, port->win0base + C101_DTR); - sca_out(0, MSCI1_OFFSET + CTL, port); /* RTS uses ch#2 output */ - sca_open(dev); - /* DCD is connected to port 2 !@#$%^& - disable MSCI0 CDCD interrupt */ - sca_out(IE1_UDRN, MSCI0_OFFSET + IE1, port); - sca_out(IE0_TXINT, MSCI0_OFFSET + IE0, port); - - set_carrier(port); - - /* enable MSCI1 CDCD interrupt */ - sca_out(IE1_CDCD, MSCI1_OFFSET + IE1, port); - sca_out(IE0_RXINTA, MSCI1_OFFSET + IE0, port); - sca_out(0x48, IER0, port); /* TXINT #0 and RXINT #1 */ - c101_set_iface(port); - return 0; -} - - -static int c101_close(struct net_device *dev) -{ - port_t *port = dev_to_port(dev); - - sca_close(dev); - writeb(0, port->win0base + C101_DTR); - sca_out(CTL_NORTS, MSCI1_OFFSET + CTL, port); - hdlc_close(dev); - return 0; -} - - -static int c101_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -{ - const size_t size = sizeof(sync_serial_settings); - sync_serial_settings new_line; - sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; - port_t *port = dev_to_port(dev); - -#ifdef DEBUG_RINGS - if (cmd == SIOCDEVPRIVATE) { - sca_dump_rings(dev); - printk(KERN_DEBUG "MSCI1: ST: %02x %02x %02x %02x\n", - sca_in(MSCI1_OFFSET + ST0, port), - sca_in(MSCI1_OFFSET + ST1, port), - sca_in(MSCI1_OFFSET + ST2, port), - sca_in(MSCI1_OFFSET + ST3, port)); - return 0; - } -#endif - if (cmd != SIOCWANDEV) - return hdlc_ioctl(dev, ifr, cmd); - - switch(ifr->ifr_settings.type) { - case IF_GET_IFACE: - ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL; - if (ifr->ifr_settings.size < size) { - ifr->ifr_settings.size = size; /* data size wanted */ - return -ENOBUFS; - } - if (copy_to_user(line, &port->settings, size)) - return -EFAULT; - return 0; - - case IF_IFACE_SYNC_SERIAL: - if(!capable(CAP_NET_ADMIN)) - return -EPERM; - - if (copy_from_user(&new_line, line, size)) - return -EFAULT; - - if (new_line.clock_type != CLOCK_EXT && - new_line.clock_type != CLOCK_TXFROMRX && - new_line.clock_type != CLOCK_INT && - new_line.clock_type != CLOCK_TXINT) - return -EINVAL; /* No such clock setting */ - - if (new_line.loopback != 0 && new_line.loopback != 1) - return -EINVAL; - - memcpy(&port->settings, &new_line, size); /* Update settings */ - c101_set_iface(port); - return 0; - - default: - return hdlc_ioctl(dev, ifr, cmd); - } -} - - - -static void c101_destroy_card(card_t *card) -{ - readb(card->win0base + C101_PAGE); /* Resets SCA? */ - - if (card->irq) - free_irq(card->irq, card); - - if (card->win0base) { - iounmap(card->win0base); - release_mem_region(card->phy_winbase, C101_MAPPED_RAM_SIZE); - } - - free_netdev(card->dev); - - kfree(card); -} - -static const struct net_device_ops c101_ops = { - .ndo_open = c101_open, - .ndo_stop = c101_close, - .ndo_change_mtu = hdlc_change_mtu, - .ndo_start_xmit = hdlc_start_xmit, - .ndo_do_ioctl = c101_ioctl, -}; - -static int __init c101_run(unsigned long irq, unsigned long winbase) -{ - struct net_device *dev; - hdlc_device *hdlc; - card_t *card; - int result; - - if (irq<3 || irq>15 || irq == 6) /* FIXME */ { - pr_err("invalid IRQ value\n"); - return -ENODEV; - } - - if (winbase < 0xC0000 || winbase > 0xDFFFF || (winbase & 0x3FFF) !=0) { - pr_err("invalid RAM value\n"); - return -ENODEV; - } - - card = kzalloc(sizeof(card_t), GFP_KERNEL); - if (card == NULL) - return -ENOBUFS; - - card->dev = alloc_hdlcdev(card); - if (!card->dev) { - pr_err("unable to allocate memory\n"); - kfree(card); - return -ENOBUFS; - } - - if (request_irq(irq, sca_intr, 0, devname, card)) { - pr_err("could not allocate IRQ\n"); - c101_destroy_card(card); - return -EBUSY; - } - card->irq = irq; - - if (!request_mem_region(winbase, C101_MAPPED_RAM_SIZE, devname)) { - pr_err("could not request RAM window\n"); - c101_destroy_card(card); - return -EBUSY; - } - card->phy_winbase = winbase; - card->win0base = ioremap(winbase, C101_MAPPED_RAM_SIZE); - if (!card->win0base) { - pr_err("could not map I/O address\n"); - c101_destroy_card(card); - return -EFAULT; - } - - card->tx_ring_buffers = TX_RING_BUFFERS; - card->rx_ring_buffers = RX_RING_BUFFERS; - card->buff_offset = C101_WINDOW_SIZE; /* Bytes 1D00-1FFF reserved */ - - readb(card->win0base + C101_PAGE); /* Resets SCA? */ - udelay(100); - writeb(0, card->win0base + C101_PAGE); - writeb(0, card->win0base + C101_DTR); /* Power-up for RAM? */ - - sca_init(card, 0); - - dev = port_to_dev(card); - hdlc = dev_to_hdlc(dev); - - spin_lock_init(&card->lock); - dev->irq = irq; - dev->mem_start = winbase; - dev->mem_end = winbase + C101_MAPPED_RAM_SIZE - 1; - dev->tx_queue_len = 50; - dev->netdev_ops = &c101_ops; - hdlc->attach = sca_attach; - hdlc->xmit = sca_xmit; - card->settings.clock_type = CLOCK_EXT; - - result = register_hdlc_device(dev); - if (result) { - pr_warn("unable to register hdlc device\n"); - c101_destroy_card(card); - return result; - } - - sca_init_port(card); /* Set up C101 memory */ - set_carrier(card); - - netdev_info(dev, "Moxa C101 on IRQ%u, using %u TX + %u RX packets rings\n", - card->irq, card->tx_ring_buffers, card->rx_ring_buffers); - - *new_card = card; - new_card = &card->next_card; - return 0; -} - - - -static int __init c101_init(void) -{ - if (hw == NULL) { -#ifdef MODULE - pr_info("no card initialized\n"); -#endif - return -EINVAL; /* no parameters specified, abort */ - } - - pr_info("%s\n", version); - - do { - unsigned long irq, ram; - - irq = simple_strtoul(hw, &hw, 0); - - if (*hw++ != ',') - break; - ram = simple_strtoul(hw, &hw, 0); - - if (*hw == ':' || *hw == '\x0') - c101_run(irq, ram); - - if (*hw == '\x0') - return first_card ? 0 : -EINVAL; - }while(*hw++ == ':'); - - pr_err("invalid hardware parameters\n"); - return first_card ? 0 : -EINVAL; -} - - -static void __exit c101_cleanup(void) -{ - card_t *card = first_card; - - while (card) { - card_t *ptr = card; - card = card->next_card; - unregister_hdlc_device(port_to_dev(ptr)); - c101_destroy_card(ptr); - } -} - - -module_init(c101_init); -module_exit(c101_cleanup); - -MODULE_AUTHOR("Krzysztof Halasa <khc@pm.waw.pl>"); -MODULE_DESCRIPTION("Moxa C101 serial port driver"); -MODULE_LICENSE("GPL v2"); -module_param(hw, charp, 0444); -MODULE_PARM_DESC(hw, "irq,ram:irq,..."); |